Textile apparatus



June 25, 1940- c. w. ADDY n AL TEXTILE APPARATUS Filed Dec 2, 1936 Patented June 25, 1940 TEXTILE APPARATUS Charles Wesley Addy, Reginald Henry John Riley, and Reginald John Grinnell, Spondon, near Derby, England,. assignors to Celanese Corporation of America, a corporation of Delaware Application December 2, 1936, Serial No. 113,782 In Great Britain December 24, 1935 '7 Claims.

This invention relates to improved textile apparatus and particularly to apparatus for the delivery or winding of threads of artificial filaments continuously with their manufacture by extrusion- The invention is particularly concerned with processes for delivering or winding such threads in which a feed roller is employed to draw the thread from a source of supply, e. g. spinning jet, and deliver it to some points of use, e. g. a winding or twisting and winding device.

Where, as in the dry spinning of artificial threads, the feed roller serves to draw the threadof filaments continuously and deliver it to a winding or twisting and winding device, occasions occur in which the feed roller serves as a reciplent for the thread while winding is interrupted. Thus, during the starting up of the winding operation or during bobbin changing, waste thread is collected on the feed roller to be removed after winding has-been commenced or recommenced. For example, in starting up spinning the thread of filaments that has descended the cell is drawn from the cell and applied to "the feed roller and is there collected until it can be carried to the bobbin on which it is wound. Then again, when the bobbin is completed, the thread end is broken between the feed roller and the bobbin and continues to be collected by the feed roller until the full bobbin has been replaced by the empty bob bin. is eiiected by separating the end of thread proceeding from the cell from the ring of waste that has collected on the roller, and the thread is left passing about once round the feed roller (usually being threaded through a back guide at the rear of the roller) andthence to the bobbin.

1e ring of Waste thread has then to be re- ,ioved from the roller.

The ordinary method of removing the waste is to slide it along the feed roller to a waste roller of lesser diameter that is not secured to the feed roller shaft. The operatives hand is inserted in the ring of waste and the waste roller is brought to rest by pulling on the waste to en.- ab-le the ring to be cut through and completely removed.

According to the invention, there is provided adjacent the end of the feed roller a waste support which is held stationary. By this means, when the waste is slid from the feed roller on to the support there is no danger of snatch being applied by the support to the ring of waste, and the ring can easily be cut away for removal, whereas in the old arrangement, if the waste The transfer of the thread to the bobbin.

roller was not sufficiently free of the feed roller shaft to be easily brought to rest, it was possible that snatch might be applied to the ring of waste when seized by the operative, with consequent danger to the fingers of the operative.

The stationary support may be mounted in any convenient manner, and even completely independently of the feed roller and the feed roller shaft. It is, howevenconvenient to mount the support on or round the feed roller shaft and to hold the support stationary by means such as a rod or arm connecting the support to some convenient part of the machine. Thus, an arm may be connected to the support so as to extend rearwardly, rearwardly and downwardly, or rearwardly-and upwardly fromthe support to the frame so as to leave the top andfront portions of the support clear for'the cutting of the ring of waste. i

. Where the waste support is mountedon the feed roller shaft, it may. have a plain journal;

' bearing directly on thefeed roller or may be provided with roller or ball bearings. Provision should be made for lubrication of the support on the shaft.

The waste support is conveniently of capstan shape or waisted, so that when the waste is seized by the operative it is-drawn away from the end of the feed roller.

In order to ensure the easy transfer of waste to the support, the feed roller should preferably overlapthe support, and the overlapping end of the feed roller may also be chamfered. It, is also advantageous to arrange that the portion .of thefeed roller on which the yarn isreceived is somewhat tapered so that only a slight endwise movement with a knife or other tool is necessary to free the ring ofwaste and enable it to be slid easily to the end of the roller. This tapering should be slight in extent so as to interfere as little as possible with the denier of the thread, which is, of course, determined by the peripheral speed of the part of the roller engaged by the thread, and guidesshould be arranged so as to direct the thread to a definite part of the tapered portion having a predetermined peripheral speed.

The apparatus according to the invention may be employed with any suitable winding device, capor ring-spinning devices being suitable where it is desired to twist the thread. The thread may be wound on to packages of any desired type, e. g. parallel wound flanged bobbins; bobbins with difierent-sized flanges to receive thread so traversed as to leave all or part of the surface of the package tapering down to the smaller flange; parallel, tapered, or partly tapered tubes or other supports to receive thread traversed with a copor bottle-bobbin wind; or tubular supports to receive the thread traversed over the whole length of the package into a cop-like shape as described in U. 5. application S. No. 92,966 filed July 28, 1936. a

The accompanying drawing illustrates the invention,

Figs. 1 and 2 showing transverse sections through a bank of spinning cells, feed rollers and a cap spinning frame, and

Fig. 3 a longitudinal view partly in section of an arrangement of feed rollers and waste supports in accordance with the invention.

The sectional view in Figs. 1 and 2 of the feed roller and waste support apparatus is taken on the line 4-4 of Fig. 3.

Referring to Figs. 1 and 2, the artificial silk filaments 5 from a bank of spinning cells B are carried round the feed rollers 7 through the back guide 8, thence over the top of the feed rollers to the balloon guide 9 of a cap-spinning device it). The threads are lubricated at any suitable point on their way to the cap-spinning device.

Referring to Fig. 3, the feed rollers I, each designed to deliver two threads, are provided at each end with slightly tapered portions II and chamfered edges l2, and are mounted on a shaft l3 passing through bosses I4 and being secured to the shaft by set screws IS. The shaft is carried at its ends or at intervals in bearings l6. Alternating with the feed rollers 1 are stationary waste supports I1 waisted as shown and secured to the frame by brackets 18. As shown in Fig. 3, the ends of the feed rollers I overlap the waste supports ll. The threads by means of suitable guides are run on the tapered portions H of the feed rollers I. This tapering of the feed rollers assists removal of waste therefrom, and this removal is further assisted by the chamfered ends [2. When the operative has brought the ring of waste on to the waste support I! and pulls on the ring so as to cut it through, there is no danger of snatch since the waste support I! is stationary.

Instead of providing a single feed roller for each pair of threads, obviously a single feed roller may be provided for each thread. A feed roller for a single thread is illustrated at each end of the drawing in Fig. 3. In such an arrangement using a feed roller for each individual thread, the stationary waste supports may alternate with each feed roller or with each pair of feed rollers.-

Having described our invention, what we desire to secure by Letters Patent is:

1. Apparatus for delivering threads, comprising a source of supply of the thread, a rotatable shaft, a feed roller secured to said shaft and a stationary tubular waste support having one diameter smaller than the diameter of the feed roller,

which support is disposed about said shaft adjacent the end of the feed roller so that waste can be slid from the feed roller on to the support.

2. Apparatus for delivering threads, comprising a source of supply of the thread, a device for winding and twisting the thread, a rotatable shaft, a feed roller secured to said shaft and adapted to forward the thread to the winding and twisting device and a stationary tubular waste support having one diameter smaller than the diameter of the feed roller, which support is disposed about said shaft adjacent the end of the feed roller so that waste can be slid from the feed roller on to the support.

3. Apparatus according to claim 1, wherein the tubular waste support is formed with a waist.

4. Apparatus for delivering threads, comprising a source of supply of the thread, a rotatable shaft, a feed roller secured to said shaft, said feed roller being formed with a slightly tapered thread carrying portion, a thread guide adapted to guide the thread on to and maintain it on said tapering portion and a stationary tubular waste support having one diameter smaller than the diameter of the feed roller, which support is disposed about said shaft adjacent the end of the feed roller so that waste can. be slid from the feed roller on to the support.

5. Apparatus for the manufacture of artificial threads, which comprises a spinning unit delivering an artificial thread, a rotatable shaft, a feed roller secured to said shaft and feeding a thread,

and a stationary tubular waste support having one diameter smaller than the diameter of the feed roller, which support is disposed about said shaft adjacent the end of the feed roller so that waste can he slid from the feed roller on to the support.

6. Apparatus for the manufacture of artificial threads, which comprises a number of spinning units each delivering a single artificial thread, a rotatable shaft, a series of feed rollers secured to said shaft and each feeding two threads, stationary tubular waste supports each having one diameter smaller than the diameter of the feed rollers and each disposed about said shaft and between and adjacent the ends of two adjacent feed rollers, so that waste can be slid from the feed rollers on to the supports.

'7. Apparatus for delivering threads, comprising a source of supply of the thread, a rotatable shaft, a feed roller secured to said shaft and, adjacent the end of the feed roller, a fixed tubular waste support disposed about said shaft, an end of the feed roller being provided with a rim over-lapping an end of said waste support to facilitate the transference of waste from the feed roller to the support.

CHARLES WESLEY ADDY. REGINALD HENRY JOHN RILEY. REGINALD JOHN GRINNELL. 

